Refrigerant Piping Work - Daikin FXUQ71AVEB Installation Manual

(3) Check the level of the unit from 2 directions (air outlet
2
and ). (Refer to Fig. 18)
Nut
(Field supply)
Hanger
Tighten
To fix hanger
Washer clamp (5)
(accessory)
Insert
Washer fixing method
4
1
4
1
Level must be ensured
Fig.18
English
Hanging bolt
Washer for hanger (3)
(accessory)
Nut (Field supply)
Fig.15
Upper nut
Fig.16
Piping part
3
2
Fig.17
Piping part
3
2
Level
• Install the indoor unit leveled.
1
If the unit is inclined and the drain piping side gets high, it
may cause malfunction of a float switch and results in
water leakage.
However, for 2-way air discharge, install the unit inclined
1° downward to the drain piping.
• Attach nuts on the upper and lower side of hanger.
If there is no upper nut and the lower nut is over-tight-
ened, the hanging plate and the top plate will deform and
cause abnormal sound.
• Do not insert materials other than that specified into the
clearance between the hanger and the washer for hanger
(3).
Unless the washers are properly attached, the hanging
bolts may come off from the hanger.
WARNING
The indoor unit must be securely installed on a place
that can withstand the mass.
If the strength is insufficient, the unit may fall down and cause
injuries.
6.

REFRIGERANT PIPING WORK

• For the outdoor unit refrigerant piping, refer to the installation
manual attached to the outdoor unit.
• Carry out insulation of both gas and liquid refrigerant piping
securely. If not insulated, it may cause water leakage. For
gas piping, use insulation material of which heat resistant
temperature is not less than 120°C.
For use under high humidity, strengthen the insulation mate-
rial for refrigerant piping. If not strengthened, the surface of
insulation material may sweat.
• Before installation work, make sure that the refrigerant is
R410A. (Unless the refrigerant is R410A, the normal opera-
tion cannot be expected.)
CAUTION
This air conditioner is a dedicated model for new refrig-
erant R410A. Make sure to meet the requirements shown
below and carry out installation work.
• Use dedicated piping cutters and flaring tools for
R410A.
• When making a flare connection, coat the flared inner
surface only with either oil or ester oil.
• Use only the flare nuts attached to the air conditioner.
If other flare nuts are used, it may cause refrigerant
leakage.
• To prevent contamination or moisture from getting
into the piping, take measures such as pinching or
taping the piping.
Do not mix substance other than the specified refriger-
ant such as air into the refrigeration circuit.
If the refrigerant leaks during the work, ventilate the
room.
8